Answer:
See explanation below
Explanation:
Let's recall what's the law of acceleration.
First of all, the acceleration is a vector that has the change of velocity in function of the time.
Now, the law of acceleration is related to Newton's Second law which states that an object will move only if there are forces around it. In other words, the following expression:
F = m . a
Now, in this case, we know that the acceleration of an object is affected by a force always. So, if an object stand still, it will not move unless you push it or pull it to move, and the acceleration will speed up or down depending of the force it was exerted.
According to this, the law of acceleration can be applied here:
1. A bike going down a hill. Of course, because, let's suppose you let a bike alone go down on a hill, you will see that the speed of the bike will be faster as time goes by. This is because the force acting here is the weight of the bike and gravity.
2. Dropping a ball from a building. In this case, you drop a ball from a high floor on a building, it will happen the same thing as the bike. It will go faster because of gravity.
3. Putting the break on a car. Now in this case it's easy because you only need to know that when you put the brakes, the speed of the car will go down, but also the acceleration. So there's no need of a further explanation of this.
Hope this helps
When scientists obtain new information, what happens to an existing scientific theory?
It is revised
It is reevaluated
It becomes a law
It remains the same
Answer:
It is reevaluated
Explanation:
Because of this new evidence, the theory can change, so the scientists must reevaluate the theory
The electron configuration for aluminum (Al) is shown below:
1s22s22p63s23p1
Which diagram shows the correct distribution of electrons in the electron shells of an aluminum atom?
A small orange dot is surrounded by 5 concentric circles. The inner ring has green dots at the north and south positions. The second ring has green dots at east and west. The third ring has six dots, at the north, northeast, southeast, south, southwest, and northwest. The fourth ring has dots at the north and south, and the outer ring has one dot at the west position.
A small orange dot is surrounded by two concentric circles. The inner circle has 6 green dots spaced approximately evenly across the circle. The outer circle has 7 dots, also approximately evenly spaced; none are aligned with dots in the inner circle.
An orange dot has 3 concentric circles surrounding it. The innermost circle has green dots at the north and south positions. The center circle has 8 dots spaced unevenly. The outer circle has three dots, spaced so that two are closer to each other than either is to the third.
An orange dot is surrounded by a concentric circle. 13 closely spaced green dots lie on that outer circle.
Answer:
It is the third choice
Explanation:
Just did assignment
Answer:
It's C
Explanation:
Describe two substances that are useful because of their viscosity
if 11 molecules of monosaccharides with the formula C6H12O6 are assembled to produce a complex carbohydrate, how many atoms of hydrogen be in the final polymer?
In humans, having freckles is dominant over not having freckles. Andrew does not have freckles. What is his genotype for freckles? A) ff B) FF C) fF D) Ff
Answer:
A)ff
Explanation:
its A bc, how you would write a dominate trait for having freckles is FF and how you would write a ressive(cant spell that word sorry) trait for having freckles is ff. if Andrew does not have freckles then he is a ressive, ff. and also my teacher told me that u always write a dominate trait before a ressive trait unless u r doing a tri hybrid cross or something else.
What did John Dalton contribute to the understanding of the atom?
John Dalton contribute to the understanding of the atom that all matter was composed of atoms, indivisible and indestructible building blocks.
While all atoms of an element were identical, different elements had atoms of differing sizes and mass.
What is an atom?An atom is a particle of matter that uniquely defines a chemical element.
An atom consists of a central nucleus that is usually surrounded by one or more electrons.
Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties.
Dalton based his theory on the law of conservation of mass and the law of constant composition.
The theory states that all matter is made of atoms, which are indivisible.
(1) All matter is composed of tiny, indivisible particles, called atoms, that cannot be destroyed or created.
(2) Each element has atoms that are identical to each other in all of their properties.
Learn more about the atom here:
https://brainly.com/question/1566330
#SPJ2
Explain how balancing chemical equations relates to the law of conservation of matter.
Answer:
Normally, it explains that matter cannot be created or destroyed. It demonstrates different chemical reactions that help show the different transformations of the matter but will never destroy it or create it.
Infrared radiation A) Heat from warm objects, used to detect the location of objects Microwaves B) All the radiation humans can see, ranging from red to violet Ultraviolet light C) Used in radar and to heat food Visible light D) Given off by very hot objects, such as the sun
Answer:
Infrared radiation → A) used to detect the location of objects
Microwaves → D) Used in radar and to heat food
Ultraviolet light → C)Given off by very hot objects, such as the sun Heat from warm objects
Visible light → B) All the radiation humans can see, ranging from red to violet
Explanation:
Microwaves have magnetic waves with very long lengths, greater than that of infrared light. These waves are produced through vibrations that produce heat, as the microwave is turned on, which allows the food to be heated. These waves are also used to provide communication on some types of devices.
Infrared radiation is a type of non-ionizing radiation that has a low frequency and therefore cannot be visualized, since it is not within a visible electromagnetic spectrum, having a frequency lower than red. It can be used to detect the licalization of objects and does not pose a health risk.
Ultraviolet radiation is extremely harmful to our body. It is characterized by radiation with very small wavelengths, less than 400nm. This type of radiation can be released by the sun and ultraviolet lamps.
Visible light refers to the simplest form of electromagnetic wave and covers all the radiation that our eyes can see, allowing different colors to be seen in the objects we observe according to the reorganization of atoms and molecules.
Answer:
A=Microwaves
B=Ultraviolet light
C=Visible light
D=Infared radiation
Explanation:
A) Used in radar and to heat food
B) Given off by very hot objects, such as the sun
C) All the radiation humans can see, ranging from red to violet
D) Heat from warm objects, used to detect the location of objects
TOOK THE EXAM
How do you convert 34.6 kilograms to micrograms?
Also the Steps that got you that answer
which characteristics of an element can be determined by considering only the element’s specific location on the periodic table?
Answer:
Gas, Solid, or liquid
Explanation:
How much space would one mole of grass take up?
Answer:
If there's a grass area in the shape of a square and one side is 8 metres how much would it cost to fill the grass with fresh gravel at $5/metre
all smart people i need help
Answer:
its b
Explanation:
Answer: the first box
Explanation:
What is a Hypothesis?
Answer:
A hypothesis is a claim you make about what you think is going to happen in an experiment.
Hope This Helps
<3
Which is always the first step in dealing with an accident in the lab?
A. Call the emergency number, 911.
B. Call the fire department.
C. Notify the teacher.
D. Read the MSDS information.
The statement "If I put fenders on a bicycle,
then they will keep the rider dry when riding
through puddles" is an example of
A. an observation.
B. a hypothesis.
C. a theory.
Why are some isotopes stable and others not stable
Answer: Many elements have one or more isotopes that are radioactive. These isotopes are called radioisotopes.
Answer:
Many elements have one or more isotopes that are radioactive. The isotopes are called radioisotopes
Animals and Animal-like Protists share some characteristics. Tell how the organisms in these groups are the same? Why do you think scientists have placed them in different groups
Answer/Explanation:
Animals are multicellular heterotrophic organisms, meaning they cannot generate their own food, they rely on external sources of nutrition.
Protists are any eukaryotic organism that cannot be classified as an animal, plant, or fungus. The grouping is more used for convenience than anything else.
Like animals, animal-like protists can move freely and are heterotrophic. However, unlike animals, they are usually unicellular, and much simpler than animals
The density of water is ____________.
Answer:
The density of water is 1 g/mL.
Explanation:
Find the answers to the Blanks in each box and give an explanation, use the formulas shown to answer this.
Answer:
yes find the blanks of formulas ATM is equals to 2152 came that is also is a 1 ATM is that can come so much of money in that close to 52 ke and 22 4l
People were surveyed to find out which part of the smore they like best. The data is as follows: 75% chocolate, 20% marshmallow, 5%. This information would be best displayed by aImmersive Reader
a. line graph
b. scatter plot
c. pie/circle graph
d. bar graph
Answer:
Pie/Circle graph
Explanation:
Pie/Circle Graphs are best for demonstrating parts of a whole, especially with percents.
Which group of elements should all have similar chemical behavior?
magnesium, strontium, and sodium
b) sulfur, phosphorus, and silicon
c) hydrogen, oxygen, and nitrogen
d) argon, helium, and neon
Answer:
the correct answer is D
9. Use dot and cross diagrams to represent the following compounds.
a. Sodium chloride (NaCl)
Answer:
I have attached the diagram
There are many different kinds of metals found inside the Earth. Gold and silver are two metals used in jewelry because of their shiny appearance and their ability to bend and shape easily. Which of the following characteristics represents the ability of a substance’s shape to be bent?
A. luster
B. boiling point
C. melting point
D. malleability
Answer:
it is ductile
Explanation:
because malleability is made into thin sheets
I need help with this ASAP PLEASE!! WILL MARK BRAINLIEST!!
Write the following value in decimal form
8.99 x 10^-7
Answer:
0.000000899
Explanation:
8.99x10^-7
move the decimal to the left 7 times.
0.000000899
Answer:
0.000000899
Explanation:
.,.......,.........
What happens to a liquid when you keep on cooling it until it changes?
Answer:
it turns into a solid
Periodic Trends
PLEASE HELP ME! I WILL GIVE BRAINLIEST
what are the properties of a match before it's light on fire
Answer:
The fire sucks the match
Explanation:
It is peedo
Which of the following are signs of a chemical change/reaction? Select all that apply.
1. A change in mass.
2. A change in energy (hot, cold, light)
3. A change in volume.
4. A change in odor.
5. A change in color.
6.A change in phase/state.
7. Boiling.
8.Melting.
9. Freezing.
Answer:
the answers are
Explanation:
5,6,7,8&9.
Energy and wavelength have a (n)___
relationship
Are corals minerals? Why?
Answer:
yes they are minerals becomes they contain components that have things minerals contians.
Explanation: